FIRE – Spec Echelle

Specifications and Proposal Aids

High-Resolution Echellette Mode
Spectral resolution: R = 6000 or 50 km/s (0.6" slit)
Spatial resolution: 0.18" per pixel (spectral)
Continuous bandpass (single exposure): 0.82-2.51 microns
Slit length: 7 arcseconds
Slit width: Nominal 0.6", selectable 0.45-1.0"
Echelle orders: orders 11-32
Cross dispersion: ZnSe and Infrasil prisms
Primary dispersion: Reflection grating